Number of participants 31 subjects
Average age 57 years
Percentage men 71%
Total number of measurements 552
Median number of measurements / participant 15
Average number of measurements / participant 18
People with atrial fibrillation (AF) 1 (3.2%)
People with other cardiac arrhythmia’s 5 (16.1%)
Total number of heartbeats registered 37,575

Demography calculations

Gender distribution

Percentage men: 71%
Avg age man: 58.4
Avg age women: 56.4
Oldest male participant: 82.8
Oldest female participant: 79.3

Age distribution

Total number of participants: 31
Average age: 57 years
Participants >40 years: 87%
Participants >60 years : 42%

Country distribution

Country with most users: GB
Total countries: 2

Phone distribution

Most popular device: samsung
Percentage iOS: 29%
Percentage insufficient quality: 11%

Medical History

Total ( 31 )
History of Heart Failure 1
History of Diabetes 3
History of Artery Disease 3
History of AF 1
History of hypertension 6
History of Stroke 16
Already takes a bloodthinner 15
Amount of filled in questionnaires 1
Amount of blank questionnaires 8
AF patients ( 1 ) / ( 31 )
History of Heart Failure 0
History of Diabetes 0
History of Artery Disease 0
History of AF 0
History of hypertension 1
History of Stroke 0
Already takes a bloodthinner 1
Amount of filled in questionnaires 1
Amount of blank questionnaires 0 
plot_left_2_df <-     
    prescriptions %>% 
        select(paid_timestamp) %>% 
          mutate(date=as.POSIXct((paid_timestamp/1000) ,origin = "1970-01-01 00:00:00:000")) %>% 
        group_by(date=as.Date(date)) %>% 
        summarise(cnt=n()) %>% 
        ungroup %>% 
        mutate(cnt_=round(cnt/sum(cnt)*100,1)
              ,cnt__=round(cnt/sum(cnt),2))

ggplot(plot_left_2_df, aes(x=date, y=cnt, fill="#F8766D")) +
  geom_bar(stat="identity")+theme_minimal() + theme(legend.position = "none")

peck_hour <- 
    prescriptions %>% 
    select(paid_timestamp) %>% 
    ## https://www.freeformatter.com/epoch-timestamp-to-date-converter.html
    mutate(hour=hour(as.POSIXct((paid_timestamp/1000) ,origin = "1970-01-01 00:00:00:000"))) %>% 
    group_by(hour) %>% 
    summarise(cnt=n()) %>% 
    arrange(-cnt) %>% head(1) %>% .[[1]]
    
rbind(`Peak activation - day:` = as.character(as.Date(plot_left_2_df %>% arrange(-cnt) %>% head(1) %>% .[[1]],origin='1970-01-01'))
      ,`Peak activation - Time (UTC):` = peck_hour
      ) %>%
    kable() %>%
    kable_styling(
        bootstrap_options = c("hover", "condensed", "responsive"),
        full_width = T,
        font_size = 14)
Peak activation - day: 2021-08-25
Peak activation - Time (UTC): 16

Peak measurements (UTC): 12-2 PM
Total number of measurements received: 552
Max number of tot. measurements / day: 22

Most compliant user (%): 493%
Average number of measurements/user: 18
Average compliance (%): 131%

Diagnostics

Amount of people with Atrial Fibrillation: 1
Amount of people with other cardiac arrhythmia’s: 5
Average heart rate of non-AF people (bpm): 68
Average heart rate during AF (bpm): 68
Measurements with symptoms (%): 29%
AF-measurements with symptoms: 0
Most common symptom: lightheaded
Heart rhythm Frequency %
sinus 315 57.1
extrasystoles_frequent 84 15.2
extrasystoles_isolated 80 14.5
quality_to_low 59 10.7
extrasystoles_big_episode 10 1.8
tachycardia 2 0.4
atrial_fibrillation 1 0.2
extrasystoles_trig_episode 1 0.2
Symptoms Frequency %
no_symptoms 394 71.4
lightheaded 59 10.7
NA 39 7.1
other 30 5.4
fatigue 21 3.8
palpitations 4 0.7
shortness_of_breath 4 0.7
chest_pains 1 0.2

Symptoms during sinus rhythms
Symptoms Frequency %
no_symptoms 224 71.1
NA 30 9.5
lightheaded 23 7.3
other 22 7.0
fatigue 10 3.2
palpitations 4 1.3
shortness_of_breath 2 0.6
Symptoms during non-AF rhythms
Symptoms Frequency %
no_symptoms 128 72.3
lightheaded 25 14.1
fatigue 9 5.1
NA 7 4.0
other 5 2.8
shortness_of_breath 2 1.1
chest_pains 1 0.6
Symptoms during AF rhythms
Symptoms Frequency %
no_symptoms 1 100

Signal Quality Analysis

Average % of insufficient quality: 11.03%
Minimum % of insufficient quality: 0%
Maximum % of insufficient quality: 100%
Meas. attempts Percentage (%)
1 71.7
2 5.1
3 1.1
4 0.2
5 0.2
NA 21.7
Activity context Insufficient quality distribution (%)
sitting 74.6
standing 15.3
NA 3.4
exercising 1.7
other 1.7
sleeping 1.7
walking 1.7

Rhythm recordings